Freelancer profile translated to English.
Back to original languageAbout Mathias
Do you want a website that doesn't look like the 10,000 Wix and WordPress templates you see everywhere? Do you want custom-made, but without paying €15,000 or waiting 3 months.
I code your websites with Claude Code. Modern Stack.
(Next.js, Supabase, Vercel), fully customized design, delivered in 2 to 4 weeks depending on complexity.
What this means concretely
No templates. No visual builder that restricts design.
Every pixel is coded for your project. Native performance, solid SEO from delivery, clean code that any developer can take over.
How I work
I use Claude Code as a production assistant that allows me to code faster without sacrificing quality. You maintain the human relationship on strategy, design, and decision-making. The AI only speeds up the technical part.
I first built my own system with this stack (Mathias OS, a personal OS that manages 5 projects in parallel) before offering it to my clients. This is not a demo that collapses at the first real use. This is what I use every day.
The deliverable
Week 1: scoping, mockups, design validation
Weeks 2 to 4: development, content integration, testing
Included: Vercel hosting, SSL certificate, training for autonomy, 30 days of post-delivery support
Starting from €3,500 for a custom showcase website. Personalized quote for more complex projects (web application, platform with back-office, e-commerce).
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Agence KinomeKinome Agency Website — Next.jsCONSULTING AND AUDITSFebruary 2026 - April 2026 (2 months)Genève, SwitzerlandCategory: Communication & MarketingLocation: Geneva, SwitzerlandDescription:Complete redesign of the Kinome agency website, a communication agency based in Geneva, using Next.js and deployed on Vercel.Objective: replace an aging WordPress site with a modern, fast, and fully custom-made experience, aligned with the agency's premium positioning.What was done:Fully customized design (no templates or page builders)Front-end development in Next.js 16 with TypeScriptCareful animations and interactions to reflect the agency's creative qualityTechnical SEO optimization (Core Web Vitals, markup, semantic structure)Architecture designed for evolution (addition of case studies, form integration, future multilingual support)Deployment on Vercel with CI/CDWhy Next.js instead of WordPress:The client wanted a custom solution without relying on a page builder and with a high-performing site across all metrics. Next.js enables this natively, with clean code that any developer can take over.Link:
- Mathias OS — Assistant IA personnel pour piloter 5 projets en parallèleAI-Native System I Built for Myself in 3 DaysCONSULTING AND AUDITSJanuary 2026 - Today (7 months)Genève, SwitzerlandTo manage Kinome (communication agency, Lyon), Code Circle (freelance collective, Lyon), CauserieBot (AI chatbot SaaS), a podcast, and a network of 200+ active professional contacts, I needed a system that would offload my operational memory.I built Mathias OS — a personal operating system that combines an intelligent CRM, an autonomous AI agent, and external integrations.Nova, the AI agent at the heart of the system:Conversational chat with 14 tools (contact creation, notes, actions, corpus search)Context injected into every conversation: all contacts, deals, notes, 7-day agenda, long-term memoryAutonomous daily check-in at 7 AM: detecting cooling-off contacts, identifying latent connections, automatic adjustment of relational warmthLogbook written in prose by Nova itselfLong-term memory to retain past preferences and decisionsIntegrations:Google Calendar OAuth (read-only, context injected into Nova)Resend for automatic morning emails (daily recap + noon alert on urgent actions)Observed results in real-world use:Detection of an €80k CHF deal opportunity through a latent connection between two contacts that could have been missed for monthsContextualized reminders about my own strategic decisions when I start to drift600+ Git commits in 3 days — stable system, in production since January 2026This system is now my reference for building custom AI assistants for my clients.
- My Selfie CompanyAI Chatbot Creation for My Selfie CompanyENTERTAINMENT AND LEISUREAugust 2024 - Today (2 years)Aix-en-Provence, FranceAs part of its digital transformation, My Selfie Company, a specialist in photobooth manufacturing, called on our expertise to design and deploytwo custom AI agents**, leveraging our know-how as a **chatbot builder and AI expert.
🔹 Objective: Optimize customer service and boost sales conversions through artificial intelligence.
🔹 Solutions implemented:• A highly trained customer service AI chatbot, capable of accurately answering 100% of user frequently asked questions (with tests to prove it), helping to reduce team workload and improve support responsiveness.
• A dedicated sales AI chatbot, integrated directly into the company's website, facilitating the customer journey with an instant quote request feature.
🎯 Results:• Correct answer rate: 100%• User satisfaction rate: +90%Through theintelligent integration of these AI agents,My Selfie Company strengthens its customer relationships while automating key points of its user journey. A great success that illustrates the potential of conversational artificial intelligence for business performance.
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Education
- Master Manager Marketing and Commercial DevelopmentESG Aix-en-ProvenceOption entrepreneurial
- Professional Bachelor's Degree in Commercial Relationship Management in Digital MarketingIUT Annecy2020
Certifications
- Google AnalyticsGoogle2020